feat: add Tooltip to action icon of FileManager (#561)

### What problem does this PR solve?
#345
feat: add Tooltip to action icon of FileManager 

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

web/src/locales/en.ts

@@ -23,6 +23,7 @@ export default {
       copy: 'Copy',
       copied: 'Copied',
       comingSoon: 'Coming Soon',
+      download: 'Download',
     },
     login: {
       login: 'Sign in',

web/src/locales/zh-traditional.ts

@@ -23,6 +23,7 @@ export default {
       copy: '複製',
       copied: '複製成功',
       comingSoon: '即將推出',
+      download: '下載',
     },
     login: {
       login: '登入',

web/src/locales/zh.ts

@@ -23,6 +23,7 @@ export default {
       copy: '复制',
       copied: '复制成功',
       comingSoon: '即将推出',
+      download: '下载',
     },
     login: {
       login: '登录',